April 21 (Reuters) - The following are the top stories in the Wall Street Journal. Reuters has not verified these stories and does not vouch for their accuracy.
- Republican presidential front-runner Donald Trump, after notching a big win in New York, is planning to roll out significant changes in his campaign, including giving a policy speech on foreign affairs, using teleprompters and a speech writer, and doing more outreach to Washington Republican leaders. (http://on.wsj.com/1QoFUpJ)
- U.S. Treasury Secretary Jacob Lew said he would put abolitionist Harriet Tubman on the $20 bill, bowing to public pressure after his initial proposal to put a woman on the $10 bill appeared to misfire. (http://on.wsj.com/1QoFRtX)
- European Union competition authorities unveiled a second set of charges against Google, this time over its Android operating system, contrasting with U.S. regulators who have so far found that Google's conduct raises no antitrust concerns. (http://on.wsj.com/1QoFOhE)
- Wal Mart Stores Inc is bringing in the next generation of Walton family members to its board, nominating Steuart Walton, grandson of founder Sam Walton. (http://on.wsj.com/1QoFM9w)
(Compiled by Parikshit Mishra in Bengaluru)